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dc.contributor.authorGupta, H. M.-
dc.contributor.authorCampanha, JR-
dc.identifier.citationPhysica A-statistical Mechanics and Its Applications. Amsterdam: Elsevier B.V., v. 309, n. 3-4, p. 381-387, 2002.-
dc.description.abstractTsallis postulated a generalized form for entropy and give rise to a new statistics now known as Tsallis statistics. In the present work, we compare the Tsallis statistics with the gradually truncated Levy flight, and discuss the distribution of an economical index-the Standard and Poor's 500-using the values of standard deviation as calculated by our model. We find that both statistics give almost the same distribution. Thus we feel that gradual truncation of Levy distribution, after certain critical step size for describing complex systems, is a requirement of generalized thermodynamics or similar. The gradually truncated Levy flight is based on physical considerations and bring a better physical picture of the dynamics of the whole system. Tsallis statistics gives a theoretical support. Both statistics together can be utilized for the development of a more exact portfolio theory or to understand better the complexities in human and financial behaviors. A comparison of both statistics is made. (C) 2002 Published by Elsevier B.V. B.V.en
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.titleTsallis statistics and gradually truncated Levy flight - distribution of an economical indexen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Estadual Paulista, IGCE, Dept Fis, BR-13500970 Rio Claro, SP, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, IGCE, Dept Fis, BR-13500970 Rio Claro, SP, Brazil-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofPhysica A: Statistical Mechanics and Its Applications-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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